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ROCKWOOL Techwrap2

Rockwool Techwrap2 consists of Rockwool insulation. pre-covered with Rockwool Acoustic Membrane and reinforced aluminium foil, to provide thermal insulation and additional noise control to circular and rectangular ductwork. The product has an operating temperature range between 0°C to 230°C.

Techwrap2 is constructed from strips (lamellae) of ROCKWOOL bonded on edge to ROCKWOOL Acoustic Membrane to provide high resistance to compression:

  • Reinforced aluminium foil (inner).
  • ROCKWOOL lamella acoustic insulation.
  • ROCKWOOL Acoustic Membrane.
  • Reinforced aluminium foil (outer).

Rockwool insulation products do not contain blowing agents with an ozone depletion potential (ODP) or global warming potential (GWP), are CFC-HCFC-HFC free and 97% recyclable. They will not react with metal components or cause loss of plasticiser from PVC cables and pipes.


  • Thickness maintained at corners, bends and fixing locations to maintain superior acoustic performance.
  • Single application of materials.
  • Easy to handle and install.
  • Excellent thermal insulation properties.

General information

Uniclass 2015

Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


U90/490 Site-applied insulation to ductwork

Specification data - Mineral wool duct slab insulation

Product Reference

ROCKWOOL Techwrap2


25 mm

40 mm

50 mm

Acoustic membrane



Standard product features


2000 mm.


1000 mm.

Thermal conductivity:

10°C mean temperature – 0.039 W/mK.

Fire performance:

Non-combustible, achieving a classification of A1 in accordance with BS EN 13501-1.

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